lemma lsubf_fwd_lsubr_isdiv:
∀f1,f2,L1,L2. ❪L1,f1❫ ⫃𝐅+ ❪L2,f2❫ → 𝛀❪f1❫ → 𝛀❪f2❫ → L1 ⫃ L2.
#f1 #f2 #L1 #L2 #H elim H -f1 -f2 -L1 -L2
-/4 width=3 by lsubr_bind, isdiv_inv_next/
+/4 width=3 by lsubr_bind, pr_isd_inv_next/
[ #f1 #f2 #I1 #I2 #L1 #L2 #_ #_ #H
- elim (isdiv_inv_push … H) //
-| /5 width=5 by lsubf_fwd_sle, lsubr_beta, sle_inv_isdiv_sn, isdiv_inv_next/
-| /5 width=5 by lsubf_fwd_sle, lsubr_unit, sle_inv_isdiv_sn, isdiv_inv_next/
+ elim (pr_isd_inv_push … H) //
+| /5 width=5 by lsubf_fwd_sle, lsubr_beta, pr_sle_inv_isd_sn, pr_isd_inv_next/
+| /5 width=5 by lsubf_fwd_sle, lsubr_unit, pr_sle_inv_isd_sn, pr_isd_inv_next/
]
qed-.
lemma lsubr_lsubf_isid:
∀L1,L2. L1 ⫃ L2 → ∀f1,f2. 𝐈❪f1❫ → 𝐈❪f2❫ → ❪L1,f1❫ ⫃𝐅+ ❪L2,f2❫.
#L1 #L2 #H elim H -L1 -L2
-[ /3 width=1 by lsubf_atom, isid_inv_eq_repl/
+[ /3 width=1 by lsubf_atom, pr_isi_inv_eq_repl/
| #I #L1 #L2 | #L1 #L2 #V #W | #I1 #I2 #L1 #L2 #V
]
#_ #IH #f1 #f2 #Hf1 #Hf2
-elim (isid_inv_gen … Hf1) -Hf1 #g1 #Hg1 #H destruct
-elim (isid_inv_gen … Hf2) -Hf2 #g2 #Hg2 #H destruct
+elim (pr_isi_inv_gen … Hf1) -Hf1 #g1 #Hg1 #H destruct
+elim (pr_isi_inv_gen … Hf2) -Hf2 #g2 #Hg2 #H destruct
/3 width=1 by lsubf_push/
qed.
| #f2 #i #Hf2 #Y1 #HY1
>(lsubr_inv_atom2 … HY1) -Y1 #g1 #Hg1
elim (frees_inv_atom … Hg1) -Hg1 #f1 #Hf1 #H destruct
- /5 width=5 by lsubf_atom, isid_inv_eq_repl, pushs_eq_repl, eq_next/
+ /5 width=5 by lsubf_atom, pr_isi_inv_eq_repl, pr_pushs_eq_repl, pr_eq_next/
| #f2 #Z #L2 #W #_ #IH #Y1 #HY1 #g1 #Hg1 elim (lsubr_inv_pair2 … HY1) -HY1 *
[ #L1 #HL12 #H destruct
elim (frees_inv_pair … Hg1) -Hg1 #f1 #Hf1 #H destruct
/3 width=1 by lsubf_bind, lsubr_lsubf_isid/
| #I #L1 #V #HL12 #H destruct
elim (frees_inv_pair … Hg1) -Hg1 #f1 #Hf1 #H destruct
- /3 width=5 by lsubf_unit, sor_isid_sn, lsubr_lsubf_isid/
+ /3 width=5 by lsubf_unit, pr_sor_isi_sn, lsubr_lsubf_isid/
]
| #f2 #I2 #L2 #i #_ #IH #Y1 #HY1 #g1 #Hg1
elim (lsubr_fwd_bind2 … HY1) -HY1 #I1 #L1 #HL12 #H destruct